The market for designing and building oil- and natural gas-related projects around the world did not collapse in 2009 as some had feared. But neither did the market expand. While many construction-industry firms working in the petrolem sector experienced booms through most of the past decade, the pace of new-contract signing slowed significantly in late 2008 and the first half of 2009 as economies around the world staggered and oil and gas prices tumbled. Photo: Fluor Fluor’s Trinidad/Tobago Poinsettia platform, nearing completion, is the largest offshore platform ever built in the island republic. Related Links: View more industry sectors from
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.